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- #!/usr/bin/python
- # Copyright (c) 2014 The Chromium Authors. All rights reserved.
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
- """Module that finds and runs a binary by looking in the likely locations."""
- import os
- import subprocess
- import sys
- def run_command(args):
- """Runs a program from the command line and returns stdout.
- Args:
- args: Command line to run, as a list of string parameters. args[0] is the
- binary to run.
- Returns:
- stdout from the program, as a single string.
- Raises:
- Exception: the program exited with a nonzero return code.
- """
- proc = subprocess.Popen(args,
- stdout=subprocess.PIPE,
- stderr=subprocess.PIPE)
- (stdout, stderr) = proc.communicate()
- if proc.returncode is not 0:
- raise Exception('command "%s" failed: %s' % (args, stderr))
- return stdout
- def find_path_to_program(program):
- """Returns path to an existing program binary.
- Args:
- program: Basename of the program to find (e.g., 'render_pictures').
- Returns:
- Absolute path to the program binary, as a string.
- Raises:
- Exception: unable to find the program binary.
- """
- trunk_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
- os.pardir))
- possible_paths = [os.path.join(trunk_path, 'out', 'Release', program),
- os.path.join(trunk_path, 'out', 'Debug', program),
- os.path.join(trunk_path, 'out', 'Release',
- program + '.exe'),
- os.path.join(trunk_path, 'out', 'Debug',
- program + '.exe')]
- for try_path in possible_paths:
- if os.path.isfile(try_path):
- return try_path
- raise Exception('cannot find %s in paths %s; maybe you need to '
- 'build %s?' % (program, possible_paths, program))
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